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Open source HubSpot alternatives for AI agents

8 alternatives to HubSpot. 6 have an interface an agent can drive. 8 are open source.

ListingLicenseAgent interfaceReachEffortLast activity
NextCRM MIT MCP server, from the builder 7 of 10 jobs Config only Sep 2, 2026
EspoCRM AGPL-3.0 API, from the builder 7 of 10 jobs Config only Sep 3, 2026
Frappe CRM AGPL-3.0 API, from the builder 5 of 9 jobs Config only Sep 3, 2026
Mautic GPL-3.0 API, from the builder 9 of 10 jobs Config only Sep 3, 2026
Relaticle AGPL-3.0 MCP server, from the builder 6 of 9 jobs Config only Sep 2, 2026
Twenty AGPL-3.0 core with marked enterprise files MCP server, from the builder 8 of 10 jobs Config only Sep 3, 2026
Krayin CRM MIT No agent interface Not recorded Config only Sep 1, 2026
Comp AI CRM MIT Screen only 2 of 7 jobs Config only Sep 2, 2026

NextCRM

MIT Next.js CRM with projects, invoicing, documents and a built-in 127-tool MCP server.

Free

Use it when
  • I want one app for CRM, projects and invoices that our agent can drive through MCP, and I am fine with a small project
  • I want a permissive-license CRM I can rebrand for a client
An agent cannot reach
  • Create and send invoices
  • Read and send email from the built-in client
  • Manage users, roles and LLM keys
Gotchas
  • Login is passwordless email OTP: without an email provider you read the code from the database
  • Roadmap still lists 'fix all TypeScript any types' and testing expansion; single maintainer
  • Invoices are not reachable over MCP yet
  • Bundled Postgres and MinIO ship with placeholder passwords

EspoCRM

AGPL PHP CRM with a documented REST API, OpenAPI spec and official SDKs in seven languages.

Self-hosted · Cloud · Paid extensions (Advanced Pack, Sales Pack, Google, Outlook)

Use it when
  • I need a mature CRM on a cheap PHP host with a REST API our agent can use today
  • I want to add our own entities and fields without maintaining a fork
An agent cannot reach
  • Workflows and BPM
  • Reports

1 more job is undetermined.

Gotchas
  • Workflows, BPM and reports are paid extensions
  • AGPL-3.0 and a CLA for contributions
  • Cron must run for email, workflows and scheduled jobs

Frappe CRM

AGPL CRM on the Frappe Framework; every DocType is reachable through the framework's REST API.

Self-hosted · Frappe Cloud

Use it when
  • I already run ERPNext and want a clean sales pipeline that invoices through it
  • I want unlimited users on a simple CRM and our agent updating deals through a REST API we already know
An agent cannot reach
  • Kanban and custom views

3 more jobs are undetermined.

Gotchas
  • Needs a Frappe bench: Python, MariaDB, Redis, Node; not a single container
  • Branch main is v1.x stable; develop is v2 unstable
  • AGPL-3.0
  • CRM Enrichment Settings suggests an enrichment feature; provider not documented in README

Mautic

Self-hosted marketing automation: contacts, segments, campaigns, and email, with an official REST API.

Self-hosted · Hosted trial and partners

Use it when
  • I want HubSpot-style drips and segments on my own server, with contacts I own
  • I need my agent to add leads, tag them into segments, and trigger campaigns over an API

1 more job is undetermined.

Gotchas
  • GPL-3.0 (GitHub shows NOASSERTION; composer.json says GPL-3.0)
  • The REST API is disabled by default and must be switched on in Configuration > API Settings
  • Segments, campaigns, and email sends depend on cron jobs; without them nothing moves
  • README warns against running from the GitHub source in production; use the mautic.org package or Composer
  • Requires PHP and MySQL versions matching the release's supported versions page

Relaticle

Self-hosted Laravel CRM with a 37-tool MCP server, REST API and 22 custom field types.

Self-hosted · Cloud · Cloud Pro

Use it when
  • I want a CRM our agent can read and write through MCP from day one, hosted on our own server
  • I want to run a white-label CRM for a client with billing and marketing pages switched off
An agent cannot reach
  • Add or change custom fields
  • Manage teams, workspaces and members

1 more job is undetermined.

Gotchas
  • PHP 8.5 and PostgreSQL 17 minimums are newer than most hosts ship
  • MCP rate limit 120 calls per minute per user, 25 records per page
  • One workspace per MCP connector until revoked
  • AGPL-3.0

Twenty

Open-source CRM with an in-product MCP server: per-object CRUD, workflows, metadata, views and webhooks over OAuth.

Self-hosted · Cloud · Enterprise

Use it when
  • I want a CRM our agent can query, update and reshape (new objects, fields, workflows) without a wrapper
  • I want to version our CRM's data model as code and ship it to a workspace
An agent cannot reach
  • Connect email and calendar accounts
  • Publish an app to the workspace
Gotchas
  • Env var names above come from the self-host docs and the .mcp.json dev config (PG_DATABASE_URL); confirm the current list at docs.twenty.com
  • The root .mcp.json is developer tooling (postgres, playwright, context7), not the product MCP
  • Metadata and workflow tools require loading a skill first or the agent misbuilds
  • AGPL core; enterprise files are marked and not free

Krayin CRM

MIT Laravel CRM for leads, contacts, quotes and email, configured through .env and packages.

Community · Cloud Hosting

Use it when
  • I need a free CRM on our own server with leads, quotes and inbound email, and the team knows PHP
  • I want a permissive license so we can bundle a customized CRM for clients
Gotchas
  • No built-in API: routes/api.php is the Laravel stub (one auth:api /user route); the official krayin/rest-api package was last pushed 2025-09-01
  • Default branch is 2.2; README installs from the main tag
  • Needs 3 GB RAM and MySQL 8.0.32+; PostgreSQL not supported

Comp AI CRM

Self-hosted CRM where a scheduled research agent keeps the records, tuned by four markdown skill files.

Free

Use it when
  • I want a CRM that fills itself in from our inboxes instead of nagging reps to log calls
  • I want to change what the research agent is allowed to look at and write, without rewriting the app
An agent cannot reach
  • Research and enrich a contact or company
  • Read pipeline records
  • Write facts and activities to a record
  • Talk to the agent about a contact
  • Schedule a re-check on a person
Gotchas
  • No API tokens: every request needs an identity-provider session, so an outside agent has no documented way in
  • Three separate deployments must agree on DATABASE_URL and BETTER_AUTH_SECRET or you get a redirect loop
  • Microsoft client secrets expire (6 months default) and mail sync fails silently when they do
  • Default branch is release, not main

Questions

Is there an open source alternative to HubSpot?

Yes. All 8 listings here are open source: NextCRM (MIT), EspoCRM (AGPL-3.0), Frappe CRM (AGPL-3.0), Mautic (GPL-3.0), Relaticle (AGPL-3.0), Twenty (AGPL-3.0 core with marked enterprise files), Krayin CRM (MIT), Comp AI CRM (MIT).

Which HubSpot alternatives have an MCP server?

NextCRM, Relaticle and Twenty have MCP servers from their builders.

Which HubSpot alternative can an agent do the most with?

Mautic: 9 of 10 recorded jobs reachable. Jobs differ by listing, so read each list before you choose.

Listings come from reading each repo and its docs. Reach counts the jobs an agent can do through the stated interface, and each listing page shows the evidence. Order follows fit. For agents: Markdown · JSON